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1.Above all, dual track horizontal stroke pulls a window gap of two Bo fan is too big, casement lower part is cavity, air-tightness is not strong, and the space of casement of sound insulation window that uses 3 course design wants a little bit small.
首先，双轨道横拉窗两玻扇间隙过大，窗扇下方为空腔，气密性不强，而采用三轨道设计的隔音窗窗扇间隙要小些。收藏指正
2.②The bone windows with the size of 2 cm×1 cm were obtained from the vascular cast gross anatomy sample, and revealed the vascular cast in the medullary cavity and tiny crosses in transverse and longitudinal sections of cortical bone;
②血管铸型后的山羊胫骨制作的大体解剖标本,在胫骨中段制作2cm×1cm骨窗,可见髓腔内的铸型血管,骨皮质横、纵切面上可见微细的铸型血管断面;收藏指正
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